October 3, 2016 Amy Shulke Colored Pencil, Copic, Digital Stamps, Prismacolor Pencil, YouTube The Staining Technique for Stubborn Copic Markers October 3, 2016 Amy Shulke Colored Pencil, Copic, Digital Stamps, Prismacolor Pencil, YouTube A Touch of Fall Color...Baby Pumpkin a Marker Painting Workshop where Amy explores her paper staining technique. You will find the paper staining technique handy when coloring from dark to light.